<template>
  <div class="app-container">
    <h2 style="text-align: center;">发布新课程</h2>
    <el-steps
      :active="3"
      process-status="wait"
      align-center
      style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="发布课程"/>
    </el-steps>
    <div class="ccInfo">
      <img :src="publishCourse.cover">
      <div class="main">
        <h2>{{ publishCourse.title }}</h2>
        <p class="gray"><span>共{{ publishCourse.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ publishCourse.subjectLevelOne }} — {{ publishCourse.subjectLevelTwo }}</span></p>
        <p>课程讲师：{{ publishCourse.teacherName }}</p>
        <h3 class="red">￥{{ publishCourse.price }}</h3>
      </div>
    </div>
    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>

<script>
  import course from '@/api/course'
  export default {
    data() {
      return {
        saveBtnDisabled: false, // 保存按钮是否禁用
        courseId: '',
        publishCourse: {},
      }
        },
    created() {
      console.log('publish created')
      //获取课程id
      if(this.$route.params && this.$route.params.id){
        this.courseId = this.$route.params.id;
        this.getCoursePublishId();
      }
    },

    methods: {
      previous() {
        console.log('previous')
        this.$router.push({ path: '/course/chapter/'+this.courseId })
      },

      publish() {
        console.log('publish')
        this.$router.push({ path: '/course/list' })
      },
      //根据课程id查询课程信息
      getCoursePublishId(){
        course.getPublishCourseInfo(this.courseId)
        .then(response =>{
          this.publishCourse = response.data.publishCourse;
        })
      },

      //发布课程
      publish(){
        course.publishCourse(this.courseId)
        .then(respnse => {
          //提示信息
          this.$message({
            type: 'success',
            message: '发布成功!'
          })
          //跳转课程列表页面
          this.$route.push({path: '/course/list'});
        })
      }

    }
  }
</script>
<style scoped>
  .ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative; }
  .ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
  }
  .ccInfo .main {
    margin-left: 520px;
  }
  .ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
  }
  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }
  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }
  .ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
  }
</style>
